Properties Of Solids And Liquids Question 135
Assertion : A fluid flowing out of a small hole in a vessel applies a backward thrust on the vessel. Reason : According to equation of continuity, the product of area and velocity remains constant.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason are both false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: A
Solution:
Due to small area of cross-section of the hole, fluid flows out of the vessel with a large speed and thus the fluid possesses a large linear momentum.
As no external forces act on the system, in order to conserve linear momentum, the vessel acquires a velocity in the backward direction, or in other words, a backward thrust results on the vessel.
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